To determine when Francesca and Mercedes meet based on their paths represented by the lines \(F(m)\) and \(M(m)\) on the graph, you should look at the point where the two lines intersect. The intersection point represents the time and location where both meet.
To answer the second part of the question regarding how long it will take for them to arrive at the store, you would need to check the x-coordinate of the intersection point on the graph. This x-coordinate typically represents the time.
If you have specific numerical values or a description of the graph, I can help you analyze it further!